General Introdution&colon; 1&period;YC series single-phase asynchronous motor is commonly known as a capacitor start motor&period; Single phase motor stator winding has a primary winding and a secondary winding&comma; the phase difference of 90 degrees in space&comma; We know that the single-phase motor is the main winding of the magnetic field is generated pulsating magnetic field&comma; through the secondary winding and capacitor split phase&comma; in order to produce a fixed rotation direction of the magnetic field&comma; when the speed exceeds the70-80&percnt; role&comma; the centrifugal switch will cut off the secondary winding and the start capacitor&comma; capacitor start motor is characterized by large starting torque&comma; starting torque is greater than 1&period;8&comma; low power factor&comma; used to start demanding situations&comma; cast iron shell motor&period; 2&period;YC series heavy-duty capacitor start motor&comma; YC series of small power motors&comma; aluminum shell MC series capacitor start motor&period; Structure must have a centrifugal switch and starting capacitor&comma; with a high starting torque and good operation performance&comma; small volume&comma; light weight&comma; low noise&comma; convenient maintenance&period; YC series single-phase asynchronous motor applied to general machinery and equipment without special requirements&comma; such as agricultural machinery&comma; food machinery&comma; fan&comma; water pump&comma; machine&comma; mixing machine&comma; air compressor&period;